Scientists have figured out where the Earth's water came from billions of years ago when our planet formed.
As detailed in a, primordial water may have formed as a result of hydrogen-rich atmospheres colliding with magma oceans roiling on the surface of planetary embryos, small celestial objects that clump together to form into planets like the Earth.
. "Eventually these hydrogen envelopes dissipate, but they leave their fingerprints on the young planet's composition."We've long suspected that rocky planets like the Earth formed as dust and gas surrounding the Sun accreted over time. These planetesimals became incredibly hot as they grew, forming vast magma oceans.
The researchers' new models suggest that interactions between planetesimal magma oceans and molecular hydrogen could have led to our planet's abundance of water and oxygen gas.
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